Whats wrong with me(what should i do?)

I pretty much dont ever want to have intercourse with my husband,I love him,I really do...but I dont know whats wrong with me.We have been together for 5 1/2 years,we have 3 beautiful children and our youngest is 2 month old but ever since I got pregnant with my first I stopped wanting intercourse,let me explain,we have intercourse but not often and sometimes I just do it to satisfy him, not because I want to.Today he finally said something,he thinks I dont like him :( and I dont know if I do or dont anymore.What should I do?has someone had this same situation?and how did you handle it?